Age old question here I'm sure, but I've been searching for an answer with no luck

I've been making homemade cider vinegar and I want to pickle with it. Now I know what you're gonna say. Homemade vinegar has a variable acidity and so shouldn't be used. Use store bought 5% vinegar unless I test my vinegar with a titration kit to ensure it is at least 5%.

Well titration is a pain, and also isn't pH the most important factor here, especially after the food has been added.

So the question is, can I get away with a pH test only? I personally don't care what the concentration is, so long as it's acidic enough to pickle food.

I tested mine with a paper and it was 3, I tested my shop bought and the paper said it was 5 and so did the bottle. I did read that you can put the vinegar into the freezer and take of the ice thus reducing the water content, so does that mean that some of it doesn't freeze

If you're using homemade vinegar for pickling you should ensure that the pH is no higher than 4.0, which should protect against most harmful bacteria and the formation of mold.

Distilled white vinegar is apparently about 2.4, with a strength of 5% so to be safe you probably need to aim for something similar.

Something I've just discovered, which explains a lot of things to me, is that old recipes (you know the ones passed down through families) tend to be based on a 10% vinegar which is why, when used with 5%, you get softer, mushier pickles. That explains why my mother's picalilli (made from her old aunt's recipe) just wasn't right in later years. We put it down to her fading culinary skills but I'm now thinking it was just different strength of the vinegar.

Maggie

Never doubt that you can change history. You already have. Marge Piercy

I found this information The pH value of 4.6 is important because it is the limiting factor for the growth of an extremely dangerous microorganism called Clostridium botulinum, which produces a potent toxin that causes the lethal disease botulism. The regulations concerning acidiﬁed foods were established to assure the control and inhibition of the growth of Clostridium botulinum by proper acidiﬁcation and pH control, as this microorganism is very heat resistant and therefore it is not destroyed by pasteurization or cooking temperatures below 212°F.

My apple cider vinegar with the mother tested 3, the Aspell cider vinegar tested 3 (5%), filtered home made vinegar without the mother tested 4, so I am presuming from this, that we can safely use our home made vinegar to pickle, otherwise, it's been nice knowing you all

Haha. Just out of interest, what kit do you use? Litmus paper, or an acid indicator kit? If you could tell me the exact equipment I'd appreciate it. That Ritchies Wine & Beer acid test kit has some pretty poor reviews, and the cabbage indicator I'm not sure of the accuracy of.